Mode-transition Architecture for Buck-boost converter

7. The IC controller of claim 1, wherein an output voltage (Vout) of the buck-boost converter is in a range of approximately 3.3V to 21.5V, wherein an input supply range is in a range of approximately 5V to 24V, and wherein the IC controller is operable to maintain the output voltage (Vout) within a specified percentage range during a change in an input voltage (Vin) from a first voltage to a second voltage.

8. The IC controller of claim 1, wherein the controller comprises a hardware state machine to detect the transition from the first mode to the second mode and send one or more control signals to the slope compensation circuit to control the slope compensation circuit to nullify the error in the output caused by the transition.

15. The USB device of claim 9, wherein the controller comprises a hardware state machine to detect the transition from the first mode to the second mode and send one or more control signals to the slope compensation circuit to control the slope compensation circuit to nullify the error in the output caused by the transition, wherein an output voltage (Vout) of the buck-boost converter is in a range of approximately 3.3V to 21.5V, wherein an input supply range is in a range of approximately 5V to 24V, and wherein the IC controller is operable to maintain Vout within a specified percentage range during a change in an input voltage (Vin) from a first voltage to a second voltage.